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You searched for: creator:"Tero"
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[audio]Tero - Pako [commie029] - Tero
If you thought that Commodore 64 is only good for pompous game music, you'd better re-check your opinion by listening this tune. Pako is a minimalistic rhythmic soundscape entirely made with c-64. Bleep, boop. If you like Tero's music, consider buying his vinyl ep, released by Rikos Records.
Keywords: Chipstyle
Downloads: 538
[image]Korvaamattomat - Tero-Petri

Downloads: 23
[texts]Square-free Walks on Labelled Graphs - Tero Harju
A finite or infinite word is called a $G$-word for a labelled graph $G$ on the vertex set $A_n = \{0,1,..., n-1\}$ if $w = i_1i_2...i_k \in A_n^*$, where each factor $i_ji_{j+1}$ is an edge of $E$, i.e, $w$ represents a walk in $G$. We show that there exists a square-free infinite $G$-word if and only if $G$ has no subgraph isomorphic to one of the cycles $C_3, \ C_4, \ C_5$, the path $P_5$ or the claw $K_{1,3}$...
Downloads: 2
[texts]p-Laplacian type equations involving measures - Tero Kilpeläinen
This is a survey on problems involving equations $-\operatorname{div}{\Cal A}(x,\nabla u)=\mu$, where $\mu$ is a Radon measure and ${\Cal A}:\bold {R}^n\times\bold R^n\to \bold R^n$ verifies Leray-Lions type conditions. We shall discuss a potential theoretic approach when the measure is nonnegative. Existence and uniqueness, and different concepts of solutions are discussed for general signed measures.
Downloads: 2
[image]Uuteen perheeseen - Tero-Petri

Downloads: 493
[image]Tuolilta herännyt - Tero-Petri

Downloads: 861
[audio]Dogen Sangha Finlandin Opetuspuhe: Tiesta harjoittamisen pariin - Tero Palmio
Dogen Sangha Finlandin opetuspuhe, perjantai 24.9.2010, viikoittainen Zazen + Opetuspuhe, Helsinki. Puheen piti Tero Palmio (Tenji Heisei), buddhalainen zen-munkki, Dogen Sangha Finlandin ohjaaja. Aihe: Tiesta harjoittamisen pariin. Kesto 14:07. Yhteystiedot: http://www.dogensanghafinland.org
Keywords: zen; zazen; soto; dogen sangha; dogen sangha finland; tero palmio; peter rocca; buddhism; buddhalaisuus; rambo
Downloads: 36
[image]Korvaamattomat - Tero-Petri

Downloads: 509
[audio]Podcast_001 - Tero Toivanen
Podcast about paraiso in Santiago de Cuba.
Keywords: podcast; teromakotero; Santiago de Cuba; Cuba; Guitarras y Trovadores; paraíso; Siboney
Downloads: 33
[audio]Bird Songs from Finmark 2005 - Tero Linjama
Bird voices: Bonasa bonasia, carduelis flavirostris, anthus cervinus, tringa totanus etc. Order your AudioCD:s in www.soundsfromnature.com
Keywords: birds, nature voices
Downloads: 2,088
[audio]Nature voices from Finland and Estonia - Tero Linjama
Bird voices: Sylvia communis, Hippolais icterina, Carduelis carduelis, Carduelis cannabina, Grus grus, Somateria molissima, Gavia arctica etc. Order your AudioCD:s www.soundsfromnature.com
Keywords: birds, Nature Sounds, finland, estonia
Downloads: 4,947 3.00 out of 5 stars3.00 out of 5 stars3.00 out of 5 stars(1 review)
[audio]Rasterfeld - Sides [hi005] - Tero Lindeman
Sides is a rough, tough intelligent EP full of solid techno percussion, minimal loops, strong cymbals and the occasional reference to the older days of acid techno. Rasterfeld's tracks are best used opening up a hard techno set, or serving as a change of pace from the standard techno fare that can get repetitive after awhile. Fabrik Nos makes a guest appearance on track 4, remixing an unreleased Rasterfeld track into something a bit harder and more DJ friendly...
Keywords: Techno; Minimal Techno
Downloads: 6,569
[audio]Nature Sounds from eastern part of Turkey - Tero Linjama
Bird Songs from Turkish between 21th May to 2nd June. Order your own AudioCD in www.soundsfromnature.com
Keywords: Bird; Nature Songs; Turkey
Downloads: 830
[texts]Periodicity and Unbordered Words: A Proof of the Extended Duval Conjecture - Tero Harju
The relationship between the length of a word and the maximum length of its unbordered factors is investigated in this paper. Consider a finite word w of length n. We call a word bordered, if it has a proper prefix which is also a suffix of that word. Let f(w) denote the maximum length of all unbordered factors of w, and let p(w) denote the period of w. Clearly, f(w) 2f(w)-2. This bound is tight and solves the stronger version of a 21 years old conjecture by Duval...
Downloads: 4
[texts]On the size of identifying codes in binary hypercubes - Svante Janson
We consider identifying codes in binary Hamming spaces F^n, i.e., in binary hypercubes. The concept of identifying codes was introduced by Karpovsky, Chakrabarty and Levitin in 1998. Currently, the subject forms a topic of its own with several possible applications, for example, to sensor networks. Let C be a subset of F^n. For any subset X of F^n, denote by I_r(X)=I_r(C;X) the set of elements of C within distance r from at least one x in X...
Downloads: 7
[texts]Cyclostationary measurement of low-frequency odd moments of current fluctuations - Tero T. Heikkila
Measurement of odd moments of current fluctuations is difficult due to strict requirements for band-pass filtering. We propose how these requirements can be overcome using cyclostationary driving of the measured signal and indicate how the measurement accuracy can be tested through the phase dependence of the moments of the fluctuations. We consider two schemes, the mixing scheme and the statistics scheme, where the current statistics can be accessed...
Downloads: 2
[texts]Statistics of temperature fluctuations in an electron system out of equilibrium - Tero T. Heikkila
We study the statistics of the fluctuating electron temperature in a metallic island coupled to reservoirs via resistive contacts and driven out of equilibrium by either a temperature or voltage difference between the reservoirs. The fluctuations of temperature are well-defined provided that the energy relaxation rate inside the island exceeds the rate of energy exchange with the reservoirs. We quantify these fluctuations in the regime beyond the Gaussian approximation and elucidate their depend...
Downloads: 3
[texts]Thermoelectric effects in superconducting proximity structures - Pauli Virtanen
Attaching a superconductor in good contact with a normal metal makes rise to a proximity effect where the superconducting correlations leak into the normal metal. An additional contact close to the first one makes it possible to carry a supercurrent through the metal. Forcing this supercurrent flow along with an additional quasiparticle current from one or many normal-metal reservoirs makes rise to many interesting effects...
Downloads: 1
[texts]Turconen - Ohjelmakirja - Tero Ykspetaja (with other contributors)
Turconen-tapahtuman ohjelmakirja
Keywords: science fiction; fandom; convention
Downloads: 80
[texts]Thermopower in Andreev interferometers - Pauli Virtanen
We examine the thermopower Q of a mesoscopic normal-metal (N) wire in contact to superconducting (S) segments and show that even with electron-hole symmetry, Q may become finite due to the presence of supercurrents. Moreover, we show how the dominant part of Q can be directly related to the equilibrium supercurrents in the structure. We also discuss the thermopower arising due to an anomalous kinetic coefficient which is finite in the presence of supercurrent and in some situations gives the dom...
Downloads: 2
[image]Sydänmailla - Tero Vaaran maatakiertävä uusi Viihdeorkesteri

Downloads: 1,806
[texts]Peltier effects in Andreev interferometers - Pauli Virtanen
The superconducting proximity effect is known to modify transport properties of hybrid normal--superconducting structures. In addition to changing electrical and thermal transport separately, it alters the thermoelectric effects. Changes to one off-diagonal element $L_{12}$ of the thermoelectric matrix $L$ have previously been studied via the thermopower, but the remaining coefficient $L_{21}$ which is responsible for the Peltier effect has received less attention...
Downloads: 1
[texts]State-dependent impedance of a strongly coupled oscillator-qubit system - Teemu Ojanen
We investigate the measurements of two-state quantum systems (qubits) at finite temperatures using a resonant harmonic oscillator as a quantum probe. The reduced density matrix and oscillator correlators are calculated by a scheme combining numerical methods with an analytical perturbation theory. Correlators provide us information about the system impedance, which depends on the qubit state. We show in detail how this property can be exploited in the qubit measurement.
Downloads: 4
[texts]Quantum detectors for the third cumulant of current fluctuations - Tero T. Heikkila
We consider the measurement of the third cumulant of current fluctuations arising from a point contact, employing the transitions that they cause in a quantum detector connected to the contact. We detail two generic detectors: a quantum two-level system and a harmonic oscillator. In these systems, for an arbitrary relation between the voltage driving the point contact and the energy scales of the detectors, the results can be expressed in terms of an effective detector temperature T_eff...
Downloads: 7
[texts]Photon heat transport in low-dimensional nanostructures - Teemu Ojanen
At low temperatures when the phonon modes are effectively frozen, photon transport is the dominating mechanism of thermal relaxation in metallic systems. Starting from a microscopic many-body Hamiltonian, we develop a nonequilibrium Green's function method to study energy transport by photons in nanostructures. A formally exact expression for the energy current between a metallic island and a one-dimensional electromagnetic field is obtained...
Downloads: 2
[texts]Thermopower induced by a supercurrent in superconductor-normal-metal structures - Pauli Virtanen
We examine the thermopower Q of a mesoscopic normal-metal (N) wire in contact to superconducting (S) segments and show that even with electron-hole symmetry, Q may become finite due to the presence of supercurrents. Moreover, we show how the dominant part of Q can be directly related to the equilibrium supercurrents in the structure. In general, a finite thermopower appears both between the N reservoirs and the superconductors, and between the N reservoirs themselves...
Downloads: 12
[texts]Cyclostationary shot noise in mesoscopic measurements - Leif Roschier
We discuss theoretically a setup where a time-dependent current consisting of a DC bias and two sinusoidal harmonics is driven through a sample. If the sample exhibits current-dependent shot noise, the down-converted noise power spectrum varies depending on the local-oscillator phase of the mixer. The theory of this phase-dependent noise is applied to discuss the measurement of the radio-frequency single-electron transistor...
Downloads: 1
[texts]Dimensional crossover in topological matter: Evolution of the multiple Dirac point in the layered system to the flat band on the surface - Tero T. Heikkilä
We consider the dimensional crossover in the topological matter, which involves the transformation of different types of topologically protected zeroes in the fermionic spectrum. In the considered case, the multiple Dirac (Fermi) point in quasi 2-dimensional system evolves into the flat band on the surface of the 3-dimensional system when the number of atomic layers increases. This is accompanied by formation of the spiral nodal lines in the bulk...
Downloads: 2
[texts]An improved lower bound for (1, - Florent Foucaud
We call a subset $C$ of vertices of a graph $G$ a $(1,\leq \ell)$-identifying code if for all subsets $X$ of vertices with size at most $\ell$, the sets $\{c\in C |\exists u \in X, d(u,c)\leq 1\}$ are distinct. The concept of identifying codes was introduced in 1998 by Karpovsky, Chakrabarty and Levitin. Identifying codes have been studied in various grids. In particular, it has been shown that there exists a $(1,\leq 2)$-identifying code in the king grid with density 3/7 and that there are no s...
Downloads: 3
[texts]Extending Clause Learning SAT Solvers with Complete Parity Reasoning (extended version) - Tero Laitinen
Instances of logical cryptanalysis, circuit verification, and bounded model checking can often be succinctly represented as a combined satisfiability (SAT) problem where an instance is a combination of traditional clauses and parity constraints. This paper studies how such combined problems can be efficiently solved by augmenting a modern SAT solver with an xor-reasoning module in the DPLL(XOR) framework...
Downloads: 4
[texts]Pivots, Determinants, and Perfect Matchings of Graphs - Robert Brijder
We give a characterization of the effect of sequences of pivot operations on a graph by relating it to determinants of adjacency matrices. This allows us to deduce that two sequences of pivot operations are equivalent iff they contain the same set S of vertices (modulo two). Moreover, given a set of vertices S, we characterize whether or not such a sequence using precisely the vertices of S exists...
Downloads: 5
[texts]Tolerant identification with Euclidean balls - Ville Junnila
The concept of identifying codes was introduced by Karpovsky, Chakrabarty and Levitin in 1998. The identifying codes can be applied, for example, to sensor networks. In this paper, we consider as sensors the set Z^2 where one sensor can check its neighbours within Euclidean distance r. We construct tolerant identifying codes in this network that are robust against some changes in the neighbourhood monitored by each sensor...
Downloads: 3
[texts]Absorption of heat into a superconductor-normal metal-superconductor junction from a fluctuating environment - Juha Voutilainen
We study a diffusive superconductor-normal metal-superconductor junction in an environment with intrinsic incoherent fluctuations which couple to the junction through an electromagnetic field. When the temperature of the junction differs from that of the environment, this coupling leads to an energy transfer between the two systems, taking the junction out of equilibrium. We describe this effect in the linear response regime and show that the change in the supercurrent induced by this coupling l...
Downloads: 3
[texts]A new proof for the decidability of D0L ultimate periodicity - Vesa Halava
We give a new proof for the decidability of the D0L ultimate periodicity problem based on the decidability of p-periodicity of morphic words adapted to the approach of Harju and Linna.
Downloads: 2
[texts]Fermions with cubic and quartic spectrum - Tero T. Heikkila
We study exotic fermions with spectrum E^2 ~ p^{2N}. Such spectrum emerges in the vicinity of the Fermi point with multiple topological charge N, if special symmetry is obeyed. When this symmetry is violated, the multiple Fermi point typically splits into N elementary Fermi points -- Dirac points with N=1 and spectrum E^2 ~ p^2 .
Downloads: 3
[texts]Nonlinear shot noise in mesoscopic diffusive normal-superconducting systems - Markku P. V. Stenberg
We study differential shot noise in mesoscopic diffusive normal-superconducting (NS) heterostructures at finite voltages where nonlinear effects due to the superconducting proximity effect arise. A numerical scattering-matrix approach is adopted. Through an NS contact, we observe that the shot noise shows a reentrant dependence on voltage due to the superconducting proximity effect but the differential Fano factor stays approximately constant...
Downloads: 5
[texts]Spin heat accumulation and its relaxation in spin valves - Tero T. Heikkila
We study the concept of spin heat accumulation in excited spin valves, more precisely the effective electron temperature that may become spin dependent, both in linear response and far from equilibrium. A temperature or voltage gradient create non-equilibrium energy distributions of the two spin ensembles in the normal metal spacer, which approach Fermi-Dirac functions through energy relaxation mediated by electron-electron and electron-phonon coupling...
Downloads: 2
[texts]Graphs where every k-subset of vertices is an identifying set - Sylvain Gravier
Let $G=(V,E)$ be an undirected graph without loops and multiple edges. A subset $C\subseteq V$ is called \emph{identifying} if for every vertex $x\in V$ the intersection of $C$ and the closed neighbourhood of $x$ is nonempty, and these intersections are different for different vertices $x$. Let $k$ be a positive integer. We will consider graphs where \emph{every} $k$-subset is identifying. We prove that for every $k>1$ the maximal order of such a graph is at most $2k-2.$ Constructions attaining ...
Downloads: 2
[texts]Locally identifying colourings for graphs with given maximum degree - Florent Foucaud
A proper vertex-colouring of a graph G is said to be locally identifying if for any pair u,v of adjacent vertices with distinct closed neighbourhoods, the sets of colours in the closed neighbourhoods of u and v are different. We show that any graph G has a locally identifying colouring with $2\Delta^2-3\Delta+3$ colours, where $\Delta$ is the maximum degree of G, answering in a positive way a question asked by Esperet et al...
Downloads: 4
[texts]Convergence Properties for the Physarum Solver - Kentaro Ito
The Physarum solver is an intuitive mechanism for solving optimisation problems based on the idea of an electrical network, whereby the conductivity is reinforced by the current. We show that the Physarum solver obtains the solution to the linear transshipment problem on a digraph and that the electrical potential converges to an infinity-harmonic solution of the dual problem.
Downloads: 3
[texts]Supercurrent-carrying density of states in diffusive mesoscopic Josephson weak links - Tero T. Heikkilä
Recent experiments have demonstrated the nonequilibrium control of the supercurrent through diffusive phase-coherent normal-metal weak links. The experimental results have been accurately described by the quasiclassical Green's function technique in the Keldysh formalism. Taking into account the geometry of the structure, different energy scales and the nonidealities at the interfaces allows us to obtain a quantitative agreement between the theory and the experimental results in both the amplitu...
[texts]Physics of Proximity Josephson Sensor - Juha Voutilainen
We study the proximity Josephson sensor (PJS) in both bolometric and calorimetric operation and optimize it for different temperature ranges between 25 mK and a few Kelvin. We investigate how the radiation power is absorbed in the sensor and find that the irradiated sensor is typically in a weak nonequilibrium state. We show in detail how the proximity of the superconductors affects the device response: for example via changes in electron-phonon coupling and out-of-equilibrium noise...
Downloads: 2
[texts]Non-equilibrium supercurrent through mesoscopic ferromagnetic weak links - Tero T. Heikkila
We consider a mesoscopic normal metal, where the spin degeneracy is lifted by a ferromagnetic exchange field or Zeeman splitting, coupled to two superconducting reservoirs. As a function of the exchange field or the distance between the reservoirs, the supercurrent through this device oscillates with an exponentially decreasing envelope. This phenomenon is similar to the tuning of a supercurrent by a non-equilibrium quasiparticle distribution between two voltage-biased reservoirs...
Downloads: 2
[texts]Superconducting Proximity Effect and Universal Conductance Fluctuations - Tero T. Heikkila
We examine universal conductance fluctuations (UCFs) in mesoscopic normal-superconducting-normal (N-S-N) structures using a numerical solution of the Bogoliubov - de Gennes equation. We discuss two cases depending on the presence (``open'' structure) or absence (``closed'' structure) of quasiparticle transmission. In contrast to N-S structures, where the onset of superconductivity increases fluctuations, we find that UCFs are suppressed by superconductivity for N-S-N structures...
Downloads: 2
[texts]RPA: Probabilistic analysis of probe performance and robust summarization - Leo Lahti
Probe-level models have led to improved performance in microarray studies but the various sources of probe-level contamination are still poorly understood. Data-driven analysis of probe performance can be used to quantify the uncertainty in individual probes and to highlight the relative contribution of different noise sources. Improved understanding of the probe-level effects can lead to improved preprocessing techniques and microarray design...
Downloads: 2
[texts]Measuring non-Gaussian fluctuations through incoherent Cooper pair current - Tero T. Heikkila
We study a Josephson junction (JJ) in the regime of incoherent Cooper pair tunneling, capacitively coupled to a nonequilibrium noise source. The current-voltage (I-V) characteristics of the JJ are sensitive to the excess voltage fluctuations in the source, and can thus be used for wide-band noise detection. Under weak driving, the odd part of the I-V can be related to the second cumulant of noise, whereas the even part is due to the third cumulant...
Downloads: 4
[texts]Electron-electron interaction induced spin thermalization in quasi-low-dimensional spin valves - Tero T. Heikkila
We study the spin thermalization, i.e., the inter-spin energy relaxation mediated by electron-electron scattering in small spin valves. When one or two of the dimensions of the spin valve spacer are smaller than the thermal coherence length, the direct spin energy exchange rate diverges and needs to be regularized by the sample dimensions. Here we consider two model systems: a long quasi-1D wire and a thin quasi-2D sheet.
Downloads: 3
[texts]Supercurrent-induced Peltier-like effect in superconductor/normal-metal weak links - Tero T. Heikkila
The local nonequilibrium quasiparticle distribution function in a normal-metal wire depends on the applied voltage over the wire and the type and strength of different scattering mechanisms. We show that in a setup with superconducting reservoirs, in which the supercurrent and the dissipative current flow (anti)parallel, the distribution function can also be tuned by applying a supercurrent between the contacts...
Downloads: 5
[texts]Phase-dependent noise correlations in normal-superconducting structures - Markku P. V. Stenberg
We study nonequilibrium noise correlations in diffusive normal-superconducting structures in the presence of a supercurrent. We present a parametrization for the quasiclassical Green's function in the first order of the counting field $\chi$. This we employ to obtain the voltage and phase dependence of cross and autocorrelations and to describe the role played by the setup geometry. We find that the low-voltage behavior of the effective charge $q_{\rm eff}$ describing shot noise is a result of a...
Downloads: 4
[texts]Globalization of Mobile and Wireless Communications - Ramjee Prasad, Sudhir Dixit, Richard van Nee, Tero Ojanpera
Globalization of Mobile and Wireless Communications
Keywords: wireless; mobile; spectrum; communication; access; network; systems; frequency; data; radio; business model; business models; wireless communication; cognitive radio; wireless access; wireless communications; wireless sensor; multi business; mobile phone; context management
Downloads: 285
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